JP2018061948A - Manufacturing method of filter medium - Google Patents
Manufacturing method of filter medium Download PDFInfo
- Publication number
- JP2018061948A JP2018061948A JP2016202753A JP2016202753A JP2018061948A JP 2018061948 A JP2018061948 A JP 2018061948A JP 2016202753 A JP2016202753 A JP 2016202753A JP 2016202753 A JP2016202753 A JP 2016202753A JP 2018061948 A JP2018061948 A JP 2018061948A
- Authority
- JP
- Japan
- Prior art keywords
- filter medium
- layer
- filter
- medium layer
- hole area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Filtering Materials (AREA)
Abstract
Description
この発明は、従来よりも製作が簡易な濾材の製造方法に関するものである。 The present invention relates to a method for producing a filter medium that is easier to manufacture than in the past.
従来、種々の異物を含んだ液体中から異物を除去する多筒型自動逆洗式ストレーナに関し、特に、例えば、船舶のバラストタンク内に供給されるバラスト水に含まれる生物や不純物等の異物を濾過するための船舶用バラスト水処理に好適な多筒型自動逆洗式ストレーナに関する提案があった（特許文献１）。
この提案によると、断面三角形状の底辺を内周に位置させたウェッジワイヤを円筒状に構成して濾過エレメントを形成しているため、原水及び逆洗水が通過するウェッジワイヤ間の隙間が濾過エレメントの長さ方向に連続して形成されることにより、濾過エレメント内に配置した細径円錐体が原水及び逆洗水の流れを制御する効果を十分に発揮させることができるとともに、ウェッジワイヤ間の濾過隙間が正確に設定され、かつ濾過面の一次側に付着したスラッジを逆洗する逆洗力が大きい濾過エレメントを有する多筒型自動逆洗式ストレーナを得ることができる、というものである。
しかし、このウェッジワイヤを用いた濾材は製作がかなり煩瑣であるという問題があった。
Conventionally, it relates to a multi-cylinder automatic backwash strainer that removes foreign matters from liquids containing various foreign matters, and in particular, removes foreign matters such as organisms and impurities contained in ballast water supplied into a ballast tank of a ship. There has been a proposal for a multi-cylinder automatic backwash strainer suitable for marine ballast water treatment for filtration (Patent Document 1).
According to this proposal, since the filtration element is formed by configuring the wedge wire with the bottom of the triangular cross-section located on the inner circumference into a cylindrical shape, the gap between the wedge wires through which raw water and backwash water pass is filtered. By being formed continuously in the length direction of the element, the narrow cone arranged in the filter element can sufficiently exert the effect of controlling the flow of raw water and backwash water, and between the wedge wires A multi-cylinder type automatic backwash strainer having a filtration element with a large backwashing force for backwashing sludge adhering to the primary side of the filtration surface can be obtained. .
However, the filter medium using the wedge wire has a problem that it is very troublesome to manufacture.
そこでこの発明は、従来よりも製作が簡易である濾材の製造方法を提供しようとするものである。 Therefore, the present invention seeks to provide a method for producing a filter medium that is easier to manufacture than in the prior art.
前記課題を解決するためこの発明では次のような技術的手段を講じている。
この発明の濾材の製造方法は、造形材を所定方向に走査しながら吐出させ、これを硬化させる動作を繰り返すことで高さ方向に厚みを有する濾材条を層状に生成して前記濾材条を高さ方向に積層すると共に、開孔率が低い濾材層に開孔率が高い濾材層を積層するようにしたことを特徴とする。
この濾材の製造方法では、造形材を所定方向に走査しながら吐出させ、これを硬化させる動作を繰り返すことで高さ方向に厚みを有する濾材条を層状に生成するようにしたので、インジェクションや金型を使用せず濾材を三次元で造形することが出来る。
そして、前記濾材条を高さ方向に積層すると共に、開孔率が低い濾材層に開孔率が高い濾材層を積層するようにしたので、開孔率が低い濾材層を網目状のふるいの目として、開孔率が高い濾材層を支持体として機能させることが出来る。
ここで、この濾材は、例えば鋳物用の砂型の砂、砂濾過装置の砂、原発事故の放射能降下汚染土、リニア・モーターカーのトンネルの重金属汚染掘削土、活性炭などの粒径を整えるふるいとして使用することが出来る。
原発の汚染土を除染するためのふるいとして使用する場合、例えば濾材の開孔率が低い最上層の開孔を100〜120μmとして、下層に向かい開孔率を高くし、75μm程度の粘土・シルト質を通すようにすることが出来る。
前記造形材の材質として、例えばポリ乳酸などを使用することが出来る。
In order to solve the above problems, the present invention takes the following technical means.
In the method for producing a filter medium according to the present invention, a filter medium having a thickness in the height direction is generated in layers by repeating the operation of discharging the modeling material while scanning it in a predetermined direction and curing it, thereby increasing the height of the filter medium strip. The filter medium layers are stacked in the vertical direction, and a filter medium layer having a high hole area ratio is stacked on a filter medium layer having a low hole area ratio.
In this method for producing a filter medium, the molding material is ejected while scanning in a predetermined direction, and the operation of curing this is repeated, so that the filter medium strip having a thickness in the height direction is generated in layers. Filter media can be shaped in three dimensions without using a mold.
The filter medium strips are stacked in the height direction, and the filter medium layer having a high porosity is stacked on the filter medium layer having a low porosity, so that the filter medium layer having a low porosity is formed by a mesh-like sieve. As an eye, a filter medium layer having a high porosity can be made to function as a support.
Here, the filter medium is, for example, a sand-type sand for casting, a sand filter sand, a radioactive fall-contaminated soil in a nuclear accident, a heavy metal-contaminated excavated soil in a linear motor car tunnel, a sieve that adjusts the particle size of activated carbon, etc. Can be used as
When used as a sieve to decontaminate the contaminated soil of the nuclear power plant, for example, the uppermost layer of the filter medium with a low porosity is set to 100 to 120 μm, the porosity is increased toward the lower layer, and clay of about 75 μm It can be made to pass through the silt.
For example, polylactic acid can be used as the material of the modeling material.
この発明は上述のような構成であり、次の効果を有する。
インジェクションや金型を使用せず濾材を三次元で造形することができるので、従来よりも製作が簡易である濾材の製造方法を提供することが出来る。
The present invention is configured as described above and has the following effects.
Since the filter medium can be formed in three dimensions without using an injection or a mold, it is possible to provide a method for manufacturing a filter medium that is easier to manufacture than in the past.
以下、この発明の実施の形態を説明する。
この実施形態では、3Dプリンター（三次元造形装置）を使用して濾材を製造した。前記濾材として、分級用のメッシュ・フィルタを製作した。
この濾材の製造方法は、造形材を所定方向（縦方向と横方向）に走査しながら吐出させるようにしている。前記造形材として、ポリ乳酸樹脂を使用した。ウェッジ・ワイヤに用いられる金属素材に対し、ポリ乳酸樹脂は安価であり加工がしやすいという特性がある。
Embodiments of the present invention will be described below.
In this embodiment, a filter medium was manufactured using a 3D printer (three-dimensional modeling apparatus). As the filter medium, a mesh filter for classification was manufactured.
In this method for producing a filter medium, a modeling material is discharged while being scanned in a predetermined direction (vertical direction and horizontal direction). Polylactic acid resin was used as the modeling material. In contrast to metal materials used for wedge wires, polylactic acid resin is inexpensive and easy to process.
そして、これ（ポリ乳酸樹脂）を硬化させる動作を繰り返すことで高さ方向に厚み（0.4mm）を有する濾材条（板状）を層状に生成して、前記濾材条を高さ方向に積層するようにしている。
さらに、開孔率が低い濾材層（空隙間隔0.2mm）に開孔率が高い濾材層（空隙間隔0.4mm）を積層するようにしている。さらに、開孔率が高い濾材層（空隙間隔0.8mm）を積層するようにしている。
Then, by repeating the operation of curing this (polylactic acid resin), a filter material strip (plate shape) having a thickness (0.4 mm) in the height direction is generated in layers, and the filter media strips are stacked in the height direction. I am doing so.
Further, a filter medium layer (void gap 0.4 mm) having a high porosity is laminated on a filter medium layer (porosity gap 0.2 mm) having a low porosity. Furthermore, a filter medium layer having a high hole area ratio (gap spacing 0.8 mm) is laminated.
濾材としての使用時には、上層（対物面）に開孔率が低い濾材層（空隙間隔0.2mm）、中層に次に開孔率が高い濾材層（空隙間隔0.4mm）、下層（濾別面）には更に開孔率が高い濾材層（空隙間隔0.8mm）が位置するようにしている。この濾材は筒状になるように二次成形し、内側を濾過対象物の対物面として使用してもよい。
なお、メッシュの間隔が0.2mm（細目層）、0.4mm、0.8mm、1.0mm、1.2mm、1.4mm、1.6mm、1.8mm、2.0mm、2.2mm（粗目層）と、細いのから順に10層（濾材の厚みは0.4mm×10＝4mm）を積層してもよい。
この分級機構たるメッシュ・フィルタは、細目層から粗目層へと積層していき、使用後の目詰まりを除去するための逆洗浄時に目のゴミが取れ易い構造になっている。
When used as a filter medium, the upper layer (objective surface) has a low porosity layer (gap spacing 0.2 mm), the middle layer has the next highest porosity (gap interval 0.4 mm), and the lower layer (filter separation surface) In addition, a filter medium layer (gap interval 0.8 mm) having a higher hole area ratio is positioned. The filter medium may be secondarily formed into a cylindrical shape, and the inside may be used as the object surface of the object to be filtered.
The mesh spacing is 0.2mm (fine layer), 0.4mm, 0.8mm, 1.0mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2.0mm, 2.2mm (coarse layer), 10 in order from the finest. A layer (the thickness of the filter medium may be 0.4 mm × 10 = 4 mm) may be laminated.
The mesh filter, which is a classification mechanism, is laminated from a fine layer to a coarse layer, and has a structure that easily removes dust when backwashing to remove clogging after use.
次に、この実施形態の濾材の製造方法の使用状態を説明する。
この濾材の製造方法では、造形材を所定方向に走査しながら吐出させ、これを硬化させる動作を繰り返すことで高さ方向に厚みを有する濾材条を層状に生成するようにしたので、インジェクションや金型を使用せず濾材を三次元で造形することができ、従来よりも製作が簡易であるという利点を有する。
Next, the usage state of the manufacturing method of the filter medium of this embodiment will be described.
In this method for producing a filter medium, the molding material is ejected while scanning in a predetermined direction, and the operation of curing this is repeated, so that the filter medium strip having a thickness in the height direction is generated in layers. The filter medium can be formed three-dimensionally without using a mold, and has the advantage that the production is simpler than before.
そして、前記濾材条を高さ方向に積層すると共に、開孔率が低い濾材層に開孔率が高い濾材層を積層するようにしたので、開孔率が低い濾材層を網目状のふるいの目として、開孔率が高い濾材層を支持体として機能させることが出来るという利点を有する。 The filter medium strips are stacked in the height direction, and the filter medium layer having a high porosity is stacked on the filter medium layer having a low porosity, so that the filter medium layer having a low porosity is formed by a mesh-like sieve. As an eye, there is an advantage that a filter medium layer having a high porosity can be functioned as a support.
従来よりも製作が簡易であることによって、種々の濾材の製造の用途に適用することができる。 Since the production is simpler than before, it can be applied to various filter media manufacturing applications.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016202753A JP7000015B2 (en) | 2016-10-14 | 2016-10-14 | Filter media manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016202753A JP7000015B2 (en) | 2016-10-14 | 2016-10-14 | Filter media manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2018061948A true JP2018061948A (en) | 2018-04-19 |
| JP7000015B2 JP7000015B2 (en) | 2022-01-19 |
Family
ID=61966340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2016202753A Active JP7000015B2 (en) | 2016-10-14 | 2016-10-14 | Filter media manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7000015B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11925885B2 (en) | 2018-12-06 | 2024-03-12 | Caterpillar Inc. | 3D printed filter center tube |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07507013A (en) * | 1992-02-27 | 1995-08-03 | ヨルク バウアー | Method for manufacturing a molded product having a predetermined pore structure |
| JP2001030696A (en) * | 1999-07-21 | 2001-02-06 | Sony Corp | Apparatus and method for shaping |
| JP2016060047A (en) * | 2014-09-16 | 2016-04-25 | 株式会社リコー | Three-dimensional molding apparatus, method for manufacturing three-dimensional molded object, and three-dimensional molded object |
| JP2016521195A (en) * | 2013-03-15 | 2016-07-21 | パイロテック インコーポレイテッド | Ceramic filter |
-
2016
- 2016-10-14 JP JP2016202753A patent/JP7000015B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07507013A (en) * | 1992-02-27 | 1995-08-03 | ヨルク バウアー | Method for manufacturing a molded product having a predetermined pore structure |
| JP2001030696A (en) * | 1999-07-21 | 2001-02-06 | Sony Corp | Apparatus and method for shaping |
| JP2016521195A (en) * | 2013-03-15 | 2016-07-21 | パイロテック インコーポレイテッド | Ceramic filter |
| JP2016060047A (en) * | 2014-09-16 | 2016-04-25 | 株式会社リコー | Three-dimensional molding apparatus, method for manufacturing three-dimensional molded object, and three-dimensional molded object |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11925885B2 (en) | 2018-12-06 | 2024-03-12 | Caterpillar Inc. | 3D printed filter center tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7000015B2 (en) | 2022-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2015303084B2 (en) | A tangential flow separator element incorporating flow obstacles, and method of fabrication | |
| KR102240975B1 (en) | Lower catchment with improved assembly structure | |
| JP2018519990A (en) | Multi-layer media floor filter with improved backwash | |
| US20060027511A1 (en) | Method and apparatus for increasing filter contaminant loading capacity | |
| JP2013248563A (en) | Filtering device, filtering method of the same, and backwashing method of filter medium | |
| JP4777857B2 (en) | Filtration system | |
| JP2018061948A (en) | Manufacturing method of filter medium | |
| JP5353927B2 (en) | Filtration device and operation method thereof | |
| CN103239909A (en) | Multi-media filter | |
| JP2014018741A (en) | Upward filtration apparatus equipped with fine particle filter medium | |
| JP4475924B2 (en) | Filtration device | |
| JP4763670B2 (en) | Filtration device | |
| WO2016076042A1 (en) | Downflow-type filtration tower | |
| JP5967903B2 (en) | Filtration device | |
| JP4203255B2 (en) | Downflow filtration device and downflow filtration method | |
| US679536A (en) | Filter. | |
| JP5754649B2 (en) | Depth filtration equipment | |
| JP2011148269A (en) | Sintered body and method for manufacturing the same | |
| KR101350585B1 (en) | Apparatus for treating water | |
| JP5742032B2 (en) | Filtration device | |
| JP3132118B2 (en) | Suspended solids removal device | |
| KR101269582B1 (en) | Sand filter and fitration method using the liquefaction | |
| KR101361156B1 (en) | Laminated disk filter and filter unit using the same | |
| JPH06277422A (en) | Production of filter medium and filter medium produced by the method | |
| JP2009255012A (en) | Filter device of polluted water and treatment method of polluted water using it |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20190320 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20191226 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20191225 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20200221 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20200602 |
|
| C60 | Trial request (containing other claim documents, opposition documents) |
Free format text: JAPANESE INTERMEDIATE CODE: C60 Effective date: 20200902 |
|
| C22 | Notice of designation (change) of administrative judge |
Free format text: JAPANESE INTERMEDIATE CODE: C22 Effective date: 20210825 |
|
| C22 | Notice of designation (change) of administrative judge |
Free format text: JAPANESE INTERMEDIATE CODE: C22 Effective date: 20211117 |
|
| C23 | Notice of termination of proceedings |
Free format text: JAPANESE INTERMEDIATE CODE: C23 Effective date: 20211126 |
|
| C03 | Trial/appeal decision taken |
Free format text: JAPANESE INTERMEDIATE CODE: C03 Effective date: 20211223 |
|
| C30A | Notification sent |
Free format text: JAPANESE INTERMEDIATE CODE: C3012 Effective date: 20211223 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20211223 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 7000015 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |